Potato digger and picker.



No. 7512.637. PATENTED 00118, 1904.

T. P. THBRIAULT. l PoTATo BIGGER AND PICKER.

APPLICATION FILED AUG. 27, 1901.

N0 MODEL.

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, UNITED STATES Patented October 18, 1904.

PATENT OFFICE.

M. THERIAULT, OF FORTKENT, MAINE.

PoTATo DIGGER AND PloKEF'z.

SPECIFICATION forming part of l Letters Patent No. 772,637, datedOctober 18, 1904. f

. Appiicauon mea August 27,1901. seriale. 73,474. (No model.)

To a/ZZ whom it may concern:

Be it known that I, THOMAS P. THERIAULT,.a citizen of Canada, residingat St. Francis, New

Brunswick, Canada, have invented certain new and useful Improvements inPotato Diggers and Pickers, of which thefollowing is a specification,reference being had therein to the accompanying drawings.

This invention relates to harrows and diggers, and has for its object toprovidea novel potato-digger suitably rotatable.

ence will behad to the accompanyingv drawings, forming part of thisspecification, wherein like characters denote corresponding partsthroughout both views, in which- Figure l illustrates a fragment of aframe and power-transmitting mechanism with the digger shown inelevation. Fig. 2 is a perspective View of a portion of the digger.

In the drawings, l denotes a shaft, and 2 ground-wheels carryinggear-wheels 3, by which motion is transmitted to the shafts 18 and 45,respectively, and to the gearing 19, 20, 46, and 49, which are suitablyconnected by chains. The chain 48 extends from the gear-wheel 46 to agear-wheel on the shaft 50., A suitable shaker 29 is suspended by thehangers 30, and the frame-sections 9 and l() are provided for supportingthe parts. A wheel 49 moves the. conveyer 51, which runs over a wheel onthe shaft 52. A seat 8 is suitably anchored to the platform 7, which iscarried by the frame in any suitable manner. The foregoing elements formno part of ,the

present invention, but are shown and described in operative relation toa digger.

The digger comprises in its construction a shaft 54, which ismounted inany suitable bearings and is provided with radiating arms 56, Veach ofwhich is providedwith a rib or iiange 57, formed with a rib and pocketor shelf for carrying the potatoes as they are scooped from the ground.Extensions 58 are formed on the arms and are -oppositely disposed withrelation to the ribs 57. Prongs 58 are run through the extensions andhave their ends embedded in the shaft. The outer ends of the prongsterminate on-'diferent liorizontalplanes, and those at one end have agreater curvature than those at the opposite end, and as the lingers arerotated they contact with the ground successively and notsimultaneously. Hence the power required is minimized.`

The shield 59 is provided for the excavatingwheel to prevent the dir tand potatoes from discharging Afrom the ribs or prongs, as thecentrifugal force might have a tendency to effect if this shield is notapplied.

Having thus fully'described the invention, what -I claim as new, anddesire to secure by Letters Patent, is

In a potato-digger, an excavatingwheel comprising arms attached to ashaft, flanges on the arms, and prongs of dilferent curvatures securedto the shaft and flanges adapted to enter the ground consecutively.

THOMAS P. THERIAULT.

Witnesses:

A. G. FnNLAsoN, HOWARD PIERCE.

